摘要
The Luobusha chromite deposit, which is the largest podiform deposit with maximum study in China, occurred in a fresh mantle peridotite in the east part of Yarlung Zangbo ophiolite belt in South Tibet. Comprehensive study suggested that the chromium element of chromitite coming from primitive mantle itself, and mainly coming from the regulation and reformation of accessory spinel and the incongruent melting of the two pyroxenes (chromium diopsite and enstatite), it was inferred that the primitive Cr-riched minerals in mantle may be the Cr-riched octahedral silicate minerals. The Luobusha harzburgite phase belt beneath the contact face with the dunite phase is the favorable target for searching large-scale chromite deposit.